Furnace for burning refuse



W. PIERNAY. FURNACE FOR BURNING REFUSE. APPLICATION FILED DEC. 27, 1915.

1,346,055. Patented July 6, 1920.

2 SHEETS-SHEET 1.

INVENTORJ WALTER PIE'RNAY EL MJMLMJ ATTORNE(- W. PIERNAY. FURNACF' FOR BURNING REFUSE. APPLICATION FILED 956.27, 1915- Patented July 6, 1920.

2 SHEETS-SHEET 2- INVENTOR1' WALTER Puzrimw IVALTEB PIERN AY, F STET'I IN, GERMANY, ASSIGNOR T0 STETTINER GHAMOTTE- jFABRIK AKTIENGESELLSCHAFT VOBMALS DIDIER, 0F STETTIN, GERMANY.

summon non BURNING n'nrosn.

Specification ofLetters Patent.

ramm d my niece.

Original application filed may 16, 1914, Serial No. 839,129. Divided and this application filed December 27, 1915. v Serial No. 68,760.

To all whom it may concern 1 Be it known that.][, WALTER PmnNA'Y, en-

gineer, residing at No. 25 Saunierstrasse, in

the city of Stettin, German Empire, have invented a new and useful Improvement in Furnaces for BurningItefuse; and I do "hereby declare the following to be a full,

' clear, and exact description of the same. My invention relates to furnaces in which the combustion of refuse and the like takes place especially to furnaces of this kind havlng no grate.-

This applicatlon 1s a division of my prior application, Serial No, 839,129, filed May 16, 1914, which matured into Patent No.

, 1,211,875, granted January 9, 1917.

According to my invention double conical nozzles are inserted in the shaft of the furnace which is preferably provided with a watercooled iron mantle or jacket. Through these nozzles the air necessary for the cornbustion is blown in and one feature of my invention consists in the fact that the distance of the narrowest section of the nozzles from the interior of the mantle of the com-- bustion, shaft is about one-third of the thick ness of said jacket, in order to cause thecur-' rents of air to-unite before they impinge the charge and penetrate the middle of the refuse column without eddy currents being formed. The currents cross each other he- I hind the narrowestsection'of the nozzle-at a point which is still within the nozzle, thus outside of the combustion shaft.

all

Further essential features of my invention will be referred to in explaining the drawings, in which one construction of the of Fig. 2.

Fig. 4; is a longitudinal section through a nozzle on a larger scale.

The shaft ofthe furnace consists of the filling chamber '1, the combustion chamber 2 and the slag chamber 3, which is closed at the bottom by the removable sole M. Es-

sential for the operation of the furnace is the slag removing carriage N, on which the and can issue again at the upper end of the jacket through the pipe 6 in a hot condition. Near to the 'lower end of the cooling acket double conical nozzles are inserted in the tubes 7, through which nozzles the air required for the combustion, the so called blast enters. The air is fed through the pipe 9 and passes through the funnel shaped branch pipe 9 into the annular chamber 10, J with which the nozzles 8 communicate. The interior section of a tube 7 corresponds to the outer diameter of the double conical nozzle 8, which is preferably so formed that the narrowest section, as shown in Fig. 6,

is at adistance from the interior of the j acketv equal to about one third of the thickness of the cooling mantle 4:. In this constructionof nozzles, the air currentsare caused. to unite as at 12 (Fig; 3) before they impinge on the charge.

By this means the air can penetrate to the ,mi ddle of the refuse column without eddymg currents being formed' Experiments have shown that by using the new nozzles the consumption of power in blowing in the air is much reduced, while on the other hand the output of the furnace is considerably -increased.

What I claim and desire to secure by Let ters Patent of the United States is 1. In a furnace for burning refuse, the combination of a furnace shaft, a cooling jacket surrounding the same, and a plural- .ity of air-feeding nozzles passing through the jacket and surrounding and communicating with the shaft, each said nozzle having an opening therethrough in the form of two truncated cones, the longitudinal axes of which coincide, and with the narrower ends thereof in contact, to provide a smooth air passage through the nozzle.

I combination of a furnace sha and a plurality of removable-air-feeding nozzles surrounding and communicating with the shaft, each said nozzle having an opening there- '2. Ina furnace for. burning refuse, the

through in the form of two truncated cones, nameto this specification in the presence of thellongitudinal axes (at which ioincide, and two subscribing Witnesses. Wit the narrower en 5 thereo in contact, I the length of the cone turned toward the VALTER PIERNAY 5 shaft being substantially half as long as Vvitnesses:

the length of the other cone. GEORGE LILIEGUIRD,

In testimony whereof I have signed my ENID SCHMIDT. 

